Oddly I wear Indoor Short and T-Shirt during Winter time! body heart question?

I was wondering when you go out in the morning to get newpaper or check the mailbox during winter and you saw your Neighbor going outside only in Short and T-shirt.. Is that strange?

I always go outside in short and T-shirt when getting newpapers or getting mails.. The way I see it, it only take 30 second or min to go outside and than go back inside. Plus I learned how to turned off my emotion when going out in cold weather.. My father used to take me on hunting trips when I was kid and heater doesn't work in his truck, I would sit there focusing on keeping myself getting warm, but somehow I managed to kill that emotion by turning off. I used to be bodybuilder and trained in Martial Art.. So I'm able to produce body heat.. Plus I gotta have some cold air in order to sleep, otherwise I couldn't sleep without feeling Cold Air.. I'm curious what your thoughts on this?